I agree with Jennifer. First off, no matter how bad, I would dEFINITELY log it. Otherwise it's too much of the "out of sight, out of mind." I think when we decide to make less healthy choices, we have to at least do it consciously. Which brings me to the other excellent point Jennifer made--the concept of "cheating." I would definitely NOT think of it as cheating. Instead, it is one day in the grand scheme of things where you have decided to have a favorite food or meal, but it is contextualized in an overall eating (and exercise) plan that is designed for health. I often have a day where I eat more during the week, but with the exception of Christmas, "eating more" means that instead of consuming at a 1,000 calorie deficit level, I will eat up to my metabolic level (what I burn off). Since that's a whole 1,000 calories more, I can pretty much eat whatever I might be craving. For me, that means that I log what I ate, I know that I probably didn't burn any fat that day, but I also didn't ADD any either
I think moving away from the concept of cheating also means that we move closer to a full understanding that the changes we're making aren't temporary, but are permanent.
BTW, my excursions up on the calorie count are usually not "planned" days as much as a day when I might be really hungry or a day like today when I'm PLAGUED by PMS cravings
so I go ahead and honor both my body and head hungers and eat more. I guess I sort of feel that planning a "cheat meal" or "cheat day" is too much like rewarding yourself with food which is exactly how so many of us got here in the first place.